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Feeding ecology of two sympatric species of large-sized groupers (Perciformes: Epinephelidae) on Southwestern Atlantic coralline reefs Neotropical Ichthyology
Freitas,Matheus O.; Abilhoa,Vinicius; Spach,Henry L.; Minte-Vera,Carolina V.; Francini-Filho,Ronaldo B.; Kaufman,Les; Moura,Rodrigo L..
ABSTRACT Red and black groupers are large-bodied opportunistic ambush predators commonly found in Southwestern Atlantic tropical reefs. We investigated the diet of both species in order to detail ontogenetic, spatial and temporal trends, and to assess the extent of overlap in resource use between these two sympatric predators on the Abrolhos Bank, Brazil. Decapods and fishes were the main food items of Epinephelus morio while fishes were the main prey of Mycteroperca bonaci. Both diets were significantly influenced by body size and habitat, but only smaller individuals of E. morio feed almost exclusively on crustaceans. While the two groupers rely on many of the same prey types, coexistence may be facilitated by E. morio feeding more heavily on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abrolhos Bank; Diet; Epinephelus morio; Feeding overlap; Mycteroperca bonaci.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200206
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Live coral predation by parrotfishes (Perciformes: Scaridae) in the Abrolhos Bank, eastern Brazil, with comments on the classification of species into functional groups Neotropical Ichthyology
Francini-Filho,Ronaldo B.; Moura,Rodrigo L.; Ferreira,Camilo M.; Coni,Ericka O. C..
Parrotfishes (Perciformes: Scaridae) represent a critical functional group on coral reefs because their intense herbivory activity helps in avoiding coral overgrowth by algae. Although feeding preferentially on algae and detritus, some parrotfish species also consume live corals, leading to detrimental effects that may offset the benefits of removing competitive seaweeds. Parrotfish species differ markedly in terms of jaw morphology, foraging activity and extent of substratum excavation, and are typically divided into three functional groups: browsers, scrapers and excavators. The recognition of species within each functional group helps to understand their relative effects in terms of bioerosion, coral fitness and survival, habitat alteration and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Foraging behavior; Bioerosion; Grazing scars; Scarus trispinosus; Sparisoma amplum.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200006
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